Temperature-control apparatus.



L. CAMMEN. TEMPERATURE CONTROL APPARATUS, APPLICATION mgnww 21. 1918.

1,296,761. Patented Mar. 11. 1919.

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L. CAMMEN.

(EMPERATURE CONTROL APPARATUS.

APPLlCATlON FILED JULY 27, I918.

Patented Mar. 11,1919.

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LEON CAMMEN, OF NEW YORK, N. Y.

TEMPERATURE-CONTROL APPARATUS.

Specification of Letters Patent.

Patented Mar. 11, 1919.

a Application filed July 27, 1918. Serial No. 247,008.

To all whom it may concern:

'provements are. especially devised to serve in connection with the temperature control system patented by me Feb. 12, 1917, under Patent No. 1,256,109.

In said patent I hav established a control system wherein the cooling liquid which circulates about the engine, passes thence to a heat exchanger, where it gives up excess heat to a separate liquid, that itself passes through an air cooled radiator. The same system of cooling is followed in the present application, which however embodies the principle of operation in a specially devised structure, adapted to the particular requirements of the dual system. In this structure the object sought has been that of creating a single apparatus which is substantially in the external form of the usual air cooled radiator, occupying the same position with relation to the internal combustion engine it' serves, and so arranged that it comprises within itself the separate, interacting elements of my dual temperature control sys-' tem.

With this object in view my improved aparatus consists of a combined radiator and heat exchanger, these terms being arbitrarily employed to designate, respectively, the air cooled radiator, which lowers the temperature of a liquid flowing therethrough,

and a series of passages which are in closed circuit with the engine jacket, and which subject another liquid passing therethrough, laden with heat from the engine jacket, to the influence of the liquid from the air cooled radiator, to thus dissipate some of the heat from the engine.

In the conventional types of air cooled radiators, having a fan to draw air through their interspaces, the fan is eifective over a circular area of the radiator little in excess of the fan radius, so that the air channels in the radiator outside such circular areareceive comparatively little cooling.

Therefore in my improved apparatus Iutilize only the central portion of the structure for the radiator cooling effect, and the side portions of the structure, which may be extended rearwardly to form a guide for the fan-induced drafts of air, I employ as passageways for the engine circulating liquid, and also as cross-passageways for a flow of the liquid from the air cooled radiator, to thus permit temperature exchange between the engine liquid and radiator liquid.

Other features and advantages of my said invention will hereinafter appear.

In the drawings 7 Figure 1 is a side elevation of a portion of a motor car showing my improved temperature control apparatus. Fig. 2 is a front sectional View of said-apparatus.

Fig. 3 is a section on the line 3-3 of Fig. 2. V

Fig. 4 isan enlarged front sectional detail view, showing a portion of the heat exchanger.

Fig. 5 is a side-elevation of Fig. 4, and

Fig. 6 is a section on the line 6-6 of Fig. 2.

The illustrations of. my invention are somewhat diagrammatic in character, particularly with reference to the pipe connections, but also as to the apparatus, whose-structure isgenerally indicated without regard to any special design, which may be such as is .best suited to particular requirements.

In the example given let 1 indicate a motor car, 2 an internal combustion engine having jacket 3, and 4' my improved temperature control apparatus, which is arranged to provide a dual circulatory system, with air cooling means, for one flow of liquid, and means for cooling the other flow of liquid by the air cooled flow. Thus, the radiator portion of the apparatus consists of the centrally disposed channels 5, in communcation with the upper and lower headers 6, 7 to permit the gravity flow of liquid therethrough, said channels being separated by cumference of the fan 9, mounted rear-- wardly thereof.

V The radiator portion aforesaid is flanked at each side thereof with a casing 10, that contains series of channels 11, communicatvided through said channels, another passage for liquid is provided through the casing 10 and aboutsaid channels The engine jacket connects by pipe 12 with header l2, and by pipe 13 and pump 14, with header 13'. V

The header 6 oftheradiator connects by pipe 6 with top of casing 10, and the header 7 connects by pipe 7 a and pump 15 with the bottom of casing 10.

Assuming the pumps 14 and 15 to be in operation, the dual system will function as follows Liquid from lower header 13 will be pumped to the engine jacket and thence to the upper header 12,.whenc'e it will flow by gravity, through the channels 11, back to lower header 13. This flowing liquid loses heat in passing through channels 11 for the following reason: The casing 10 is a heat exchanger, because liquid, which flows by gravity from header 6, through passages 5 of the radiator, is, thiiscooled, forced by pump 15, from header 7 and pipe 7*, up through casing 10, in which-itimmerses the channels 11, and returning, from the upper portion of casing 10, through pipe 6", back to radiator head 6. There are thus'established, in'the unified structure, two separate flows of liquid, one to be cooled by air, with fan action, and that flow to cool the-other flow, which comes laden with heat from the engine.- p 3 "While the depth of. the air cells of the radiator is limited as a oid'excessive friction-of the passing'air, the casing 10, and

headers 12, 13, are extended rearwardly, and

may form a confining channel or guide for the circular column of air induced by. the

fan-to flow through the radiator. thereby Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents to a certain degree increasing the efficiency of the induced draft, because the fan is thus enabled to function substantially as in the volute passage ofa blower.

The temperature control means employed with this apparatus may correspond with that described in my Patent No. 1,256,109.

Variations may be resorted to within the spirit and scope of my said invention, and parts thereof used without others. i

I claim:

1. A temperaturecontrol apparatus comprising in asingle structure, an air cooled radiator and azheat exchanger, I in which latter one liquid flow is adapted to be in communication with the engine jacket, and

the other, contiguous, liquid flow is adapted to be in communication with the air cooled radiator. I

.2. A temperature control apparatus for internal combustion engines comprising a radiator portion having liquid passages and air cooling spaces, an adjacent casing with passages for two separate'fiows of liquid, means for enabling one of said flows to be circulatory through the engine jacket, and means for enabling the other'flolw to be circulatory through'the passages of'the' radiator portion, whereby heat exchange is effected between said liquid flows.

3. Ina two new circulatory" system for internal combustion engines, a temperature control apparatus comprising an air cooled radiator, a fan therefor,acasing extending rearwardly,v from said radiator as a guide passage for said fan,-an enginejacket,aliquid passage in said casing in communication with said jacket, and another, contiguous, liquid passagein said casing,,in' communication with said radiator. V

Signed at borough of Manhattan in the city, county and State of-New York, this 25th'day of July,- A. D. 1918.

LEON CAMMEN. Witnesses: V

F. W. BARKER, V EDYTHE O. BARKER.

Washington, I). C. 

